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-rw-r--r--.ai/scripts/lint-org.el53
-rw-r--r--.ai/scripts/tests/test-lint-org.el108
2 files changed, 161 insertions, 0 deletions
diff --git a/.ai/scripts/lint-org.el b/.ai/scripts/lint-org.el
index 928f83b..33dc52f 100644
--- a/.ai/scripts/lint-org.el
+++ b/.ai/scripts/lint-org.el
@@ -306,6 +306,52 @@ Craig-specific annotation marker rather than Babel src-block syntax."
(lo--goto-line line)
(looking-at-p "^[ \t]*#\\+begin_src[ \t]+cj:")))
+(defvar-local lo--matched-blocks-cache nil
+ "Cons of (TICK . REGIONS) memoizing `lo--matched-block-regions'.
+TICK is the `buffer-chars-modified-tick' the regions were computed at, so a
+fix applied mid-pass invalidates them.")
+
+(defun lo--matched-block-regions ()
+ "Return ((BEGIN-LINE . END-LINE) ...) for every correctly paired block.
+Scans lines directly rather than asking org, because org's own parser is what
+mis-reads these blocks: a heading-shaped line inside a verbatim body reads as a
+structural break and loses the open block. The scan applies org's real rule —
+once a block is open, only its own `#+end_TYPE' closes it, so a nested
+`#+begin_' or a foreign `#+end_' in the body is just text."
+ (let ((tick (buffer-chars-modified-tick)))
+ (if (eql (car lo--matched-blocks-cache) tick)
+ (cdr lo--matched-blocks-cache)
+ (let ((case-fold-search t)
+ (regions nil) (open-type nil) (open-line nil) (line 0))
+ (save-excursion
+ (goto-char (point-min))
+ (while (not (eobp))
+ (setq line (1+ line))
+ (let ((text (buffer-substring-no-properties
+ (line-beginning-position) (line-end-position))))
+ (cond
+ (open-type
+ (when (string-match
+ (format "\\`[ \t]*#\\+end_%s[ \t]*\\'"
+ (regexp-quote open-type))
+ text)
+ (push (cons open-line line) regions)
+ (setq open-type nil open-line nil)))
+ ((string-match "\\`[ \t]*#\\+begin_\\([^ \t\n]+\\)" text)
+ (setq open-type (match-string 1 text)
+ open-line line))))
+ (forward-line 1)))
+ (setq lo--matched-blocks-cache (cons tick (nreverse regions)))
+ (cdr lo--matched-blocks-cache)))))
+
+(defun lo--in-matched-block-p (line)
+ "Non-nil when LINE sits within a correctly paired block, delimiters included.
+org-lint reports `invalid-block' at the delimiter lines themselves, so the
+range has to be inclusive for the suppression to reach them."
+ (cl-some (lambda (region)
+ (and (>= line (car region)) (<= line (cdr region))))
+ (lo--matched-block-regions)))
+
(defun lo--handle-item (item)
(let ((name (lo--checker-name item))
(line (lo--line item))
@@ -318,6 +364,13 @@ Craig-specific annotation marker rather than Babel src-block syntax."
wrong-header-argument))
(lo--cj-comment-block-opener-p line))
nil)
+ ;; `invalid-block' on a block that is in fact correctly paired — the
+ ;; checker is org-lint's own, so this filters its output rather than
+ ;; fixing a local checker. A genuinely unterminated block isn't in any
+ ;; matched region, so it still reports.
+ ((and (eq name 'invalid-block)
+ (lo--in-matched-block-p line))
+ nil)
((eq name 'item-number)
(lo--apply-or-preview name line msg #'lo-fix-item-number))
((eq name 'missing-language-in-src-block)
diff --git a/.ai/scripts/tests/test-lint-org.el b/.ai/scripts/tests/test-lint-org.el
index d398c4c..ceee209 100644
--- a/.ai/scripts/tests/test-lint-org.el
+++ b/.ai/scripts/tests/test-lint-org.el
@@ -193,6 +193,65 @@ real suspicious-language warning here
#+end_src
")
+;; invalid-block, false-positive case — a correctly paired example block whose
+;; body holds a heading-shaped line. org's parser reads the `** ' inside the
+;; verbatim body as a structural break, loses the open block, and flags BOTH
+;; delimiters as "Possible incomplete block".
+(defconst lo-test--verbatim-heading-block "\
+* Heading
+
+#+begin_example
+** Feature Name or Topic
+Body line.
+#+end_example
+
+Trailing prose.
+")
+
+;; invalid-block, literal-delimiter case — a paired src block whose body holds
+;; a literal `#+end_example' plus a heading-shaped line. Only `#+end_src'
+;; closes a src block, so all three findings here are false.
+(defconst lo-test--literal-end-in-src "\
+* Heading
+
+#+begin_src text
+#+end_example
+** heading shaped
+#+end_src
+")
+
+;; invalid-block, uppercase-delimiter case — org accepts #+BEGIN_/#+END_ in
+;; either case, and the pre-fix script flagged both delimiters here too.
+(defconst lo-test--uppercase-verbatim-block "\
+* Heading
+
+#+BEGIN_EXAMPLE
+** heading shaped
+#+END_EXAMPLE
+")
+
+;; invalid-block, genuine case — a block that really is never closed. The
+;; suppression must not reach this one.
+(defconst lo-test--unterminated-block "\
+* Heading
+
+#+begin_example
+truly unterminated block body
+")
+
+;; A genuinely unterminated block *after* a correctly paired one — verifies the
+;; suppression is scoped per block rather than per file.
+(defconst lo-test--paired-then-unterminated "\
+* Heading
+
+#+begin_example
+** heading shaped
+#+end_example
+
+#+begin_example
+never closed
+")
+
;; Mixed fixture — each category once.
(defconst lo-test--mixed "\
* Mixed
@@ -392,6 +451,55 @@ suspicious-language judgment."
(should (= 1 suspicious))))
;;; ---------------------------------------------------------------------------
+;;; invalid-block — false positives on correctly paired verbatim blocks
+
+(ert-deftest lo-verbatim-heading-block-emits-no-invalid-block ()
+ "Normal: a paired example block containing a heading-shaped body line emits
+no invalid-block judgment. Both delimiters are flagged by org-lint because the
+parser treats the `** ' inside the verbatim body as a structural break."
+ (let* ((out (lo-test--run lo-test--verbatim-heading-block))
+ (res (plist-get out :result))
+ (judgments (lo-test--judgments (plist-get out :issues))))
+ ;; File untouched, no fixes applied — suppression only, never a rewrite.
+ (should (equal lo-test--verbatim-heading-block res))
+ (should (= 0 (plist-get out :fixes)))
+ (should-not (member 'invalid-block (lo-test--checkers judgments)))))
+
+(ert-deftest lo-literal-end-delimiter-in-src-emits-no-invalid-block ()
+ "Boundary: a paired src block whose body holds a literal `#+end_example' and
+a heading-shaped line emits no invalid-block judgment. Only `#+end_src' closes
+a src block, so the interior delimiter is body text."
+ (let* ((out (lo-test--run lo-test--literal-end-in-src))
+ (judgments (lo-test--judgments (plist-get out :issues))))
+ (should-not (member 'invalid-block (lo-test--checkers judgments)))))
+
+(ert-deftest lo-uppercase-verbatim-block-emits-no-invalid-block ()
+ "Boundary: block delimiters are case-insensitive in org, so an uppercase
+`#+BEGIN_EXAMPLE' pair is suppressed the same as a lowercase one."
+ (let* ((out (lo-test--run lo-test--uppercase-verbatim-block))
+ (judgments (lo-test--judgments (plist-get out :issues))))
+ (should-not (member 'invalid-block (lo-test--checkers judgments)))))
+
+(ert-deftest lo-unterminated-block-still-emits-invalid-block ()
+ "Error: a block that is never closed still emits its invalid-block judgment.
+This is the finding the checker exists for — the suppression must not mask it."
+ (let* ((out (lo-test--run lo-test--unterminated-block))
+ (judgments (lo-test--judgments (plist-get out :issues))))
+ (should (member 'invalid-block (lo-test--checkers judgments)))))
+
+(ert-deftest lo-invalid-block-suppression-is-scoped-per-block ()
+ "Boundary: a paired block and an unterminated block in the same file — the
+paired one is suppressed and the unterminated one still reports. Exactly one
+invalid-block judgment, and it points at the unterminated opener (line 7)."
+ (let* ((out (lo-test--run lo-test--paired-then-unterminated))
+ (judgments (lo-test--judgments (plist-get out :issues)))
+ (invalid (cl-remove-if-not
+ (lambda (i) (eq (plist-get i :checker) 'invalid-block))
+ judgments)))
+ (should (= 1 (length invalid)))
+ (should (= 7 (plist-get (car invalid) :line)))))
+
+;;; ---------------------------------------------------------------------------
;;; --check mode
(ert-deftest lo-check-mode-does-not-modify-file ()